Hi Mohammed,
Thank you very much for your interest in Syncfusion Products.
Using Essential XlsIO, the excel content can be exported to data table by using the ExportDataTable() function. To know about the usage of this function, we have attached the online sample link. Please try the sample and let us know if this helps you.
Online Sample Link:
http://asp.syncfusion.com/sfaspnetsamplebrowser/9.1.0.20/Web/XlsIO.Web/Samples/4.0/Data%20Binding/ImportExportDataTable/CS/Default.aspx?args=5Regarding the usage of using Syncfusion.XlsIO; namespace, please go through the section of 3.3.1. Windows in the attached documentation to know about the details of deploying Essential XlsIO in a windows application.
Documentation Link:
http://help.syncfusion.com/ug_91/Reporting/XlsIO/Windows%20Forms/index.htmPlease let us know if you require any further assistance.
Thanks,
Pauline Bosco.